| ZO262RN | Suction tube (ear suction tube) | 50×Ф1.5，straight |
| ZO263RN | Suction tube (ear suction tube) | 50×Ф2，straight |
| ZO264RN | Suction tube (ear suction tube) | 90×Ф1.5，straight |
| ZO265RN | Suction tube (ear suction tube) | 90×Ф2，straight |
| ZO266RN | Suction tube (ear suction tube) | 90×Ф1.5，On the corner |
| ZO267RN | Suction tube (ear suction tube) | 90×Ф2，On the corner |
| ZO268RN | Suction tube (ear suction tube) | 90×Ф1.5，Under bending |
| ZO269RN | Suction tube (ear suction tube) | 90×Ф2，Under bending |
